<template>
    <div>
        <!-- 面包屑导航-->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>数据统计</el-breadcrumb-item>
            <el-breadcrumb-item>数据报表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片布局区域-->
        <el-card>
            <!-- 2、为 ECharts 准备一个具备大小（宽高）的 DOM -->
            <div id="main" style="width: 750px;height:400px"></div>
        </el-card>
    </div>
</template>

<script>
    //1、导入echart包
    const echarts = require("echarts")
    import _ from 'lodash'

    export default {
        data(){
            return{
                //需要
                options:{
                    title:{
                        text:'用户来源'
                    },
                    tooltip:{
                        triggle:'axis',
                        axisPointer:{
                            type:'cross',
                            label:{
                                backgroundColor:"#e9eef3"
                            }
                        }
                    },
                    grid:{
                        left:'3%',
                        right:"4%",
                        bottom:"3%",
                        containLabel:true
                    },
                    xAxis:[
                        {
                            boundaryGap:false
                        },
                    ],
                    yAxis:[
                        {
                            type: "value"
                        }
                    ]
                }
            }
        },
        created() {

        },
        //页面上的元素被渲染完毕了
        async mounted(){
            console.log(echarts)
            // 3、基于准备好的dom，初始化echarts实例
            var myChart = echarts.init(document.getElementById('main'));

            const {data:res}=await this.$http.get('reports/type/1');
            if(res.meta.status!==200){
                return this.$message.error('获取折线报表数据失败！');
            }

            //4、准备数据和配置项
            // var option = {
            //     title: {
            //         text: 'ECharts 入门示例'
            //     },
            //     tooltip: {},
            //     legend: {
            //         data:['销量']
            //     },
            //     xAxis: {
            //         data: ["衬衫","羊毛衫","雪纺衫","裤子","高跟鞋","袜子"]
            //     },
            //     yAxis: {},
            //     series: [{
            //         name: '销量',
            //         type: 'bar',
            //         data: [5, 20, 36, 10, 10, 20]
            //     }]
            // };
            const result=_.merge(res.data,this.options)
            //5、展示数据
            myChart.setOption(result);

        },
        methods:{

        }
    }
</script>

<style scoped>

</style>
